BMC FM903/04 replacement air filter for Kawasaki ZX-10 R and ZX-10 RR 2016-2026
02 · Data & docs

The facts.

Technical data
BrandBMC
Part numberFM903/04
Filter typeReplacement (drop-in) air filter
Filter mediumFour-layer oiled cotton gauze
Frame materialRubber
SurroundAluminium mesh
MaintenanceWashable and reusable
FitmentKawasaki ZX-10 R / ZX-10 RR (2016-2026)
TestingValidated to international test standards
DescriptionThe whole story▼

Born from decades of motorsport heritage, the BMC FM903/04 replacement air filter brings genuine race-derived filtration technology to the Kawasaki ZX-10 R and ZX-10 RR. Its distinctive four-layer cotton gauze construction — steeped in low-tack oil and wrapped in a protective aluminium mesh — is the product of the same engineering discipline that has made BMC a fixture in MotoGP and World Superbike paddocks. For ZX-10 R riders who demand more than the standard paper element can offer, this is the definitive upgrade.

Key Features

  • Four-layer oiled cotton gauze delivers higher airflow than the OEM paper filter, reducing pressure drop and freeing up engine performance across the rev range.
  • Aluminium mesh surround shields the cotton medium against fuel vapour and oxidation, preserving filter integrity over many thousands of kilometres.
  • Rubber frame eliminates the risk of cracking or distortion, ensuring a consistent, leak-free seal within the airbox every time.
  • Washable and reusable design means one filter can last the lifetime of the motorcycle — a cost-effective and environmentally responsible alternative to disposable paper elements.
  • Enhanced dirt absorption capacity keeps contaminants away from the engine, combining superior filtration efficiency with the airflow gains that define BMC's reputation.
  • Developed and validated to international test standards, guaranteeing the quality and consistency expected from a premium Italian filtration brand.

Race Heritage, Road Refinement

BMC — Bmc Bologna Motor Company — built its name supplying air filtration to factory racing teams where marginal gains matter most. The FM903/04 carries that lineage directly into a road-legal form factor, designed as an exact drop-in replacement for the standard ZX-10 R/RR airbox. There is no jetting, no mapping change, and no airbox modification required: the filter simply replaces the OEM element and immediately allows the engine to breathe more freely.

The four-layer cotton construction is the foundation of BMC's performance advantage. Each layer is precision-woven and individually oiled with a low-viscosity, low-tack compound that traps particulates without impeding airflow. Compared with a single-layer paper filter, the result is a measurably higher air volume reaching the throttle bodies at any given engine speed — translating to sharper throttle response and a more linear power delivery that ZX-10 R riders will notice immediately.

Built to Last

The aluminium mesh cage that surrounds the cotton medium is more than a structural element. It actively resists the fuel vapour and moisture that accumulate inside a high-performance airbox, preventing the oxidation that degrades lesser filters over time. Combined with the rubber sealing frame — which absorbs vibration and maintains its shape even under sustained high-rpm use — the FM903/04 is engineered to outlast multiple service intervals without any loss of performance. When performance does taper, the filter is simply cleaned with the appropriate BMC washing kit, re-oiled, and reinstalled.

Fitment & Compatibility

The BMC FM903/04 is a direct OEM replacement air filter for the following Kawasaki models:

  • Kawasaki ZX-10 R — 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
  • Kawasaki ZX-10 RR — 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026

No airbox modification is required. The FM903/04 is a like-for-like replacement for the original paper element.

Specifications

  • Brand: BMC
  • Part number: FM903/04
  • Type: Replacement (drop-in) air filter
  • Filter medium: Four-layer oiled cotton gauze
  • Frame material: Rubber
  • Surround: Aluminium mesh
  • Maintenance: Washable and reusable
  • Fitment: Kawasaki ZX-10 R / ZX-10 RR (2016-2026)
  • Testing: Validated to international test standards
FitmentWhich bikes this fits▼
  • Kawasaki ZX-10 R/RR (2016–2026)
07 · Support

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